Jacques Lucke
396d0b5cd0
The hardcoded age limit is now gone. The behavior can be implemented with an Age Reached Event and Kill Particle node. Other utility nodes to handle age limits of particles can be added later. Adding an Age Limit attribute to particles on birth will be useful for some effects, e.g. when you want to control the color or size of a particle over its life time. The Random Float node takes a seed currently. Different nodes will produce different values even with the same seed. However, the same node will generate the same random number for the same seed every time. The "Hash" of a particle can be used as seed. Later, we'd want to have more modes in the node to make it more user friendly. Modes could be: Per Particle, Per Time, Per Particle Per Time, Per Node Instance, ... Also a Random Vector node will be useful, as it currently has to be build using three Random Float nodes.
80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "FN_attributes_ref.hh"
|
|
|
|
namespace blender::fn {
|
|
|
|
AttributesInfoBuilder::~AttributesInfoBuilder()
|
|
{
|
|
for (int i : defaults_.index_range()) {
|
|
types_[i]->destruct(defaults_[i]);
|
|
}
|
|
}
|
|
|
|
bool AttributesInfoBuilder::add(StringRef name, const CPPType &type, const void *default_value)
|
|
{
|
|
if (name.size() == 0) {
|
|
std::cout << "Warning: Tried to add an attribute with empty name.\n";
|
|
return false;
|
|
}
|
|
if (names_.add_as(name)) {
|
|
types_.append(&type);
|
|
|
|
if (default_value == nullptr) {
|
|
default_value = type.default_value();
|
|
}
|
|
void *dst = allocator_.allocate(type.size(), type.alignment());
|
|
type.copy_to_uninitialized(default_value, dst);
|
|
defaults_.append(dst);
|
|
return true;
|
|
}
|
|
else {
|
|
const CPPType &stored_type = *types_[names_.index_of_as(name)];
|
|
if (stored_type != type) {
|
|
std::cout << "Warning: Tried to add an attribute twice with different types (" << name
|
|
<< ": " << stored_type.name() << ", " << type.name() << ").\n";
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
AttributesInfo::AttributesInfo(const AttributesInfoBuilder &builder)
|
|
{
|
|
for (int i : builder.types_.index_range()) {
|
|
StringRefNull name = allocator_.copy_string(builder.names_[i]);
|
|
const CPPType &type = *builder.types_[i];
|
|
const void *default_value = builder.defaults_[i];
|
|
|
|
index_by_name_.add_new(name, i);
|
|
name_by_index_.append(name);
|
|
type_by_index_.append(&type);
|
|
|
|
void *dst = allocator_.allocate(type.size(), type.alignment());
|
|
type.copy_to_uninitialized(default_value, dst);
|
|
defaults_.append(dst);
|
|
}
|
|
}
|
|
|
|
AttributesInfo::~AttributesInfo()
|
|
{
|
|
for (int i : defaults_.index_range()) {
|
|
type_by_index_[i]->destruct(defaults_[i]);
|
|
}
|
|
}
|
|
|
|
} // namespace blender::fn
|